Waterproof fabric.



PATENTED MAY 15, 1906.

L. A. BOND. WATERPROOF FABRIC.

APPLICATION 11.21) $214 .22. 1905.

digs;

Q J N k9 UNITED sures PATENT OFFICE.

LON A. BOND, OF. LOGANSPORT, INDIANA; ASSIGNOR To "RUBBERTEX CLOTH AND PAPER COMPANY, OF LOGANSPORT, INlll ANApA 0011- PORATIQN INDIANA.

wAr'sRPRooF' name.

1 lweeeoeee.

Specification of Letters Patent.

Patented-Kaitlin 1996.

Application filed September 22, 1905. see it. 279.034.

which are rendered im ervious to moisture and of increased strengt and durability; and my invention is produced-by subjecting the fibers to thorou' h saturation with molten r 5 when in a big the fihcrs'of the fabric. 7

- It is necessary in "theproduction of mynew 1 9 article of mahufactilre to ernploy asphalt may only be readily obtained an asphalt base, and which s a material that become known commeiglally, at least recent years. I; have producecl o f;- 'fi h st results thus far with. highly-fluid molten asphaltiq tesiduuin' from crude petroleum an asphalt'hase approximating pinetgg l 'endhrnne-tenths per cex t. pure a melting-pom}; approxlmatlng ample th'at'hythoroughlysaturatin twist ed strands pf hemp, ute, or thezli e with highiygfluiiniolten .asphaltic residuum from "-f time, trol 'u h vingp n s" h l were; i l? fi rends when twi ted together:

; term a cejhle of much greater strength than .,:wl1'en.;1i ot thussaturatedpthat the asphalt-7 y pliable: under a'comparati vely low 4o tem ture, does not soften and becomesti under the heat of-thesun, emi tends" to reserve the cable egainstvrottmg elther 'in or salt water; and that subjection of cable to water for any length oi? time is f rather than otherwise, andenabl'es it better to withstand strain and wear.

c Textile fabrics treated. with asphalt 1cmliduum from crude petroleum having an. as phalt base to thoroughly saturate the fibers 5e and fill the 01'- spaces between the fibers are render absolutely waterproof'ami'posseas edvantagesfor many purposes over the some fabrics rei dered waterproof by yfluid vcko'ndition' to cause. the as halt to nnpregnate the fibers-and, if desire to fill out the pores or spaces betwen so far as I am aware, from crud petroleum'having' tank,- operate to iremove a or as'much asj 5 plus asphalt from the .iebrgc. equeezing-rollers the of rubber, tar, or any other usual waterproofing material. Sacks ferq1ed,-or exlemple, of burlap or the like treated ifiaifcdrdaiwe with my invention form very'dliralhle'; inex e'hsive, and desirable receptacles" for the s f ment and handling of fertilizer, as theaspha t prrw teets the fibers of the textile? fabric against destruction by the acid 'cohstituents of the fertilizer. v. v,

In. the manufacture of waterp'roof'cloth,

for example, I employ "suitably fdevised a paratus, which maybelik that ShOWfi in t 1e accompanying drawing; I l The web or: fabric A to betreateclisin op eration unwound from ;a, gel} iijitndii'pas'ses over a guide-roller bfarid thence iotvhwarcl into'a saturating-tank 'c, whicli m he, say, twelve feet in length, 5 hepatitis: it h de gree of purity,"as steteiigis' euh ectf in a. meltin -tenk d to a tempo 4 fire o'ff' alliout 400 ahrenheit, temperat lieis too low to injure the fabric, bji is'fh igllfenou h to render the -asphalt, verj" gijom t e melting tank the moltei asphalt may he run into the seturating-t a iik .as'req te maintain the same suppl ed, to e igieeireii level. Means may, if necessargflbef to heat the seturatmg-tank to maintair'ilthe 'temperature of the asphalt therein 9935,31 times well above its meltm point, whiehiah out 350 Fahrenheit. ,R llers ef of the i Q. elfkeepit & nearly 31g ez'iough for F lp submer ed m t 1e; asphalt twelve eet" of moverr ehgl thorough saturation} th roller' f the seturated fabric fetweena i H d v d to 'travel ov'elro erase. eeresgt Me for a time .sufiicientite; nee therasp a t to and ibe g-ve'j ing-rellers thegeppos te v ee sp l he abric present afterdry'in (hill an so rough appearance, "w 'ch it me be desirable to'rmproveby paesin the fa t e between polishing-rollers. In t e illustration thefabric passes .from'the'squcezing-rollers over a. roller k and thenceacroes rollers'a, and k, inch maybelocatedasshovm. Abovethesaulrolh 9181881107711 ebox Z to contain a surface-enema;

IOQ

the form of a suitable powder, which may pulverized soapstone or any desired silicious tion pi es m n, terminatingl rollers comprises a lower roller r, 0

material, from which extend conducting.- over the respective ro lers 'i k to sprinkle t em with the powder when desired, the powder being transferred by the rollers to the opposite artially-dried sli htly-plastie surfaces of the abric.

om the roller k the fabric passes overa roller 1) and thence between two airs ot-polishing rollers. The first pair 0 olishmglarge diameter, and an upper companion roller s, of smaller diameter. The second pair of isning-rollers comprises an upper large roller t and a lower companion roller v, of less diam-,

eter. From the olishingrolls the fabric passes to a reel or t e likew, upon which it is wound for handling.

In the illustration, ower is supplied by a pulley 1 and transmitted throu h belts, as indicated, to the squeezing and pdlishing rollers. I prefer to" provide squeezing-rollers so mounted as to be adjustable one with relato the other, whereby their pressure against opposite sides of the web may be increased or diminished, as desired. They may be gear d in driving relation to a pulley 2 to turn at he speed of travel of the web A, and l prefer that t ey be maintained at a temperaturmbetween 350 and 400 Fahrenheit by means of steamipes running through them, as indicated. T e larger rollers rotate at the speed of forward movement of the web to carry the same along, while the smaller rollers rotate somewhat faster to rub against the surfaces of the web. B the time the web reaches the polishing-re lers the asphalt is sufficiently non-plastic to receive a polish, and this is effected by the rubbing action of the smaller rollers- The pressing and ironins; of the web produced by the polishingrollers compacts the asphalt in the ore's of the web and ives a final uniform nish to the waterproofed fabric.

The squeezing-rollers may be adjusted to remove substantially all surplus asphalt,and thus prevent the formation of filmstor surface coatings. The saturation of the fibers and fillin of the pores between them alone renders t e fabric thoroughly waterproof without materially decreasing its flexibility. Of course the squeezing-rollers may be adjusted to decrease their pressure against the fabric and leave films or surface coatings of asphalt thereon, if desired.

be used with pol- Waterproof cloth made in accordance with my invention will'netabsorb. water .will not crack, and win withstand a much hi her temerature without becoming sticky t an rub er cloth or cloth treated with tar," resi or the like. By impregnating the fibers th as halt tends great yto stren then them, which is not the case, toany suc when the fabric is treated with any other waterproofing material of which I am-aware.

My.im

rubber cloth or ta aulin are now employed. The product is muc less expensive than rubber cloth and ma .be sub1ected to rou her handlin without anger of injury. The abric may e very thin and be as strong and durable as much'heavier tarpaulinl' Cloth rendered waterproof inaccordance with my invention may be odorless and tasteless, and therefore very desirable for sacks tr contain cement, flour, meat, or other materials which would be injuriously affected b moisture.

The object ofsprinkling drying-powdei upon the fabric, as described, is to prevent the surfaces of the fabric from adhering to the polishing-rollers in a manner'to retard their action or do, injuryto the fabric. -By employing suitable drying-powders of-different colors different hues or shades-of color may be given to the surfaces of the fabric.

What I claim as new, anddesire to secure by Letters Patent, isi y 1 1. As a new article ofmanufia cture, a fabric composed of porous, fibrous mat-eri al,having its fibers asphaltic residuum from crude petroleum having an asphalt base. a a i 2. As a newarticleof manufacture, a fabric composed of porous, fibrous material having its fibers saturated or impregnated itsipores between the fibers filled with aspha] I tic residuum from crude petroleum having an asphalt base 3. As a new article of of" flexible, porous,

.fibrous material having its fibers saturated or impregnated with asphaltic residuum from crude petroleum having an asphalt base.

LONA. BOND.

In presence of i A. U. THORIEN, J. H. Lamas.

extent at least,

proved article of manufacthre may advantage in many cases where saturated or,impregnated with and IOO 

